Canon Ef 70-200mm F/2.8L Is Ii Usm

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Product Description

Canon EF 70-200mm f/2.8L IS II USM

 An essential telezoom lens for sports, wildlife or portraits.

The EF 70-200mm f/2.8L IS II USM is a workhorse telephoto zoom lens designed for professional use. It has a rugged durable design, a four-stop Image Stabilizer and specialised lens elements.

  • High-performance, L-series telephoto zoom lens

  • Constant maximum aperture of f/2.8

  • Four-stop Image Stabilizer

  • Fluorite and UD lens elements

  • Improved durability

  • 1.2m minimum focussing

  • Water and dust resistant

  • Ring type USM AF motor

 

L-series quality

The L-series is Canon's flagship professional lens range, representing the best in precision-designed EF optics. L-series lenses combine superior performance with superlative handling, and are resistant to dust and moisture.

 

Fast, constant maximum aperture

Shoot hand held in low light conditions thanks to a fast f/2.8 maximum aperture, which stays constant throughout the zoom range. Such an aperture also gives a photographer control over depth of field.

 

Image Stabilizer

Canon’s four-stop Image Stabilizer (IS) makes the EF 70-200mm f/2.8 IS II USM ideal for shooting in low light conditions when using a tripod is not possible. The IS system allows shutter speeds up to four stops slower than normal to be used without causing image blur.

 

Fluorite and ultra-low dispersion (UD) lens elements

The lens features elements made from fluorite, which reduce chromatic aberration. Five UD (ultra-low dispersion) elements are used to ensure high contrast and natural colour reproduction throughout the zoom range.

 

Smooth background blur

A virtually circular aperture diaphragm gives out of focus regions a softer, more uniform feel. Sharp foreground objects stand out against a smooth blurred background.

 

Ultrasonic focusing

A ring-type ultrasonic motor drives autofocus extremely quickly, and in near silence. Excellent holding torque ensures the point of focus is reached accurately, without overshooting. Furthermore, full-time manual override is available, making it possible to adjust focus without leaving AF mode.

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Q:SLR camera lens play what role, the fuselage play what role?
From the responsibility of the fuselage and the lens, it is generally believed that the lens on the image quality of the role of a larger, about 65%. So buy the machine when the price ratio is so divided.
Q:SLR camera can be installed at the same time two or more lens, is the two superimposed and then what will be the effect
Therefore, SLR can only be connected directly to an optical lens for imaging, the rest of the adapter ring, telephoto lens can be superimposed on the basis of this lens, play a different effect.
Q:Do professional studio photo, what is the type of camera and lens?
I am a studio photographer, you generally want to use the camera in the studio, in fact, the most important thing is to consider the cost and effect of choice! That studio is generally used machine, not the best! It will not be the cheapest! Of course, digital SLR constantly updated quickly, so it is impossible to a machine to the old! That is now the market Well, the studio generally use D300 D700 or 5D 5D2 four machines more! As for the 3D are too expensive, the studio portrait does not need to use such a machine!
Q:How to maintain the camera lens?
The advantage is that compared with the ordinary air blowing, the air blown out and the flow faster. But before the best use of the first no one to try to spray, to avoid the condensation of the air sprayed on the lens. The downside is of course the price is more expensive and one-time use. Wipe the stains of the camera lens stained, of course, to erase, the following describes the three common tools to clean the lens. Lens pen pen is very convenient supplies, more and more photographers like to use. The principle is to use the end of the carbon particles to help eliminate the surface stains. The other end is generally sweep, can be used to sweep away the dust, but this step using the previous description of the air blowing better. Lens cloth Lens cloth is a more traditional tool for cleaning stains. In addition to the same as the glasses and silk cloth is smooth texture of the lens cloth, there is another lens cloth was suede, the advantage is strong clean, the damage is repeated after use will be stained with stains, cleaning capacity greatly reduced, The more dirty or scratched the lens. Lens paper Lens paper is a "one-time" cleaning tool. Its use is to take out one to three lens paper rolled up, and then tear, with its tear at the mouth of the hair gently wipe the lens. Some people will use the lens paper dipping agent together
Q:What is the difference between a digital camera CMOS lens and a CCD lens? Which lens is better?
CCD and CMOS in the manufacture of the main difference is that the CCD is integrated in the semiconductor single crystal material, and CMOS is integrated in the metal oxide is called the semiconductor material, the working principle is not essential difference. CCD only a few manufacturers such as Sony, Panasonic and other master this technology. And CCD manufacturing process is more complex, the use of CCD camera prices will be relatively expensive. In fact, after technological transformation, the current CCD and CMOS, the actual effect of the gap has been reduced a lot. And CMOS manufacturing costs and power consumption are much lower than the CCD, so many camera manufacturers use CMOS sensor components. Imaging: in the same pixel CCD imaging permeability, sharpness is very good, color reproduction, exposure can guarantee basic accuracy. And CMOS products are often transparent in general, the color of the material to restore the weak, exposure is not very good, due to their physical characteristics of the reasons, CMOS image quality and CCD still have a certain distance. But because of the low price and a high degree of integration, so in the field of camera or has been widely used.
Q:What is the camera lens?
Like the famous Canon white focal length is 70-200 mm less than 3 times the look, and the maximum aperture constant at F2.8, with no dispersion (purple side) of the fluorite lens! The Saying that if the landlord do not understand these most basic things, my advice is not easy to SLR!
Q:What is the Chelsea certified lens?
Carl Zeiss certification lens is not Carl Zeiss lens, simply say that the third party made the lens, in line with Carl Zeiss a series of testing standards, given the lens title --- Carl Zeiss. As for the advantages of some small advantages, such as the lens aperture (aperture = lens focal length / lens caliber) smaller, more light into the amount; shoot the photo color is more saturated, the whole fresh and natural. The original Carl Zeiss quality is not the so-called certified than,
Q:Canon camera appears "camera and lens communication is faulty please clean the lens contact" error
There is such a failure, it is likely that the lens mount or fuselage bayonet electric shock was damaged or damaged, you can use alcohol to wipe the contact, if still can not work, it is recommended to send the service station.
Q:What is the depth of the camera on the lens there is a circle around the symmetrical aperture scale, what is the role of how to adjust the aperture and speed to meet the required depth of field requirements
A: The focus of the main plane of the scene in the film will form a clear image, in front of somewhere to its rear somewhere in a range, the scene can form a clear image, this range is called depth of field.
Q:120 camera lens focal length
120 film also known as Brownie (Brownie) type film, or B2-8 type film. It uses a larger film area of 120 film, its width is about 6 cm, different types of 120 camera using the length of the film and there are differences, there are 4.5,6,7,9,12 or 17 cm, so 120 camera again There are 645,66,67,69,612,617 camera differences.

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